Shaping Bezier objects and applying Physics collisions?
Apparently you can have soft body physics on Bezier Curve Objects as detailed on the Quick Noodle Physics in Blender Tutorial Youtube Video

According to the video the trick is using a highly subdivided curve, there must be lots of actual vertex (display subdivisions are insufficient), many of the settings are ignored.

You should turn off Soft Body Goal, and tweak the parameters under Soft Body Self Collision like Ball Size and Stiffness.

Some other object set to Collision Physics type must be present at the scene for interaction.



Also see related Are curve physics possible?